package Socket;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

/**
 * 聊天室的服务端
 */
public class Server {
    private ServerSocket serverSocket;
    public Server(){

            try {
                System.out.println("正在启动服务器");
                serverSocket=new ServerSocket(9394);
                System.out.println("服务器启动完毕");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    public void start(){
        try {

            while (true) {
            System.out.println("等待客户连接");
            Socket socket = serverSocket.accept();
            System.out.println("一个客户端连接上了");
                InputStream in= socket.getInputStream();
                InputStreamReader isr=new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br =new BufferedReader(isr);
                String message;
                while ((message= br.readLine())!=null){
                    System.out.println("客户端："+message);
                }


        }
           /* InputStream in= socket.getInputStream();
            InputStreamReader isr=new InputStreamReader(in, StandardCharsets.UTF_8);
            BufferedReader br =new BufferedReader(isr);
            //读取一行来自远端计算机（客户端）发送过来的字符串
            //String message=br.readLine();
            //System.out.println("客户端："+message);
            /*
            当我们通过br.readLine()读取来自远端计算机(客户端)发送过来的字符串时，
            远端计算机只有调用socket.close()正常与我们断开连接时，readLine()才会返回null。
             */
           /* String message;
            while ((message= br.readLine())!=null){
                System.out.println("客户端："+message);
            }
            */
        }catch (IOException e){
            e.printStackTrace();
        }


    }
    public static void main(String[]args){
        Server server=new Server();
        server.start();
    }
}
